"I think alcohol just enhances their personality," says Dan Haglund, who has been driving for Uber for three years. "I'd be surprised if they weren't [drunk] after 10 o'clock on the weekend. I would say most people are."

Based on current policies, Hagland has no idea if the passenger he is picking up is drunk.

The new patent would allow him to receive a notification about their condition before the passenger gets in the car.

Hagland says the patent has its positives, but he worries that it could make getting a ride difficult for those on a night out.

"They might be turned down over and over and over," says Hagland. "Then they can make the wrong decision."

Most Uber passengers told WDAY they often use Uber after going to bars.

"It's really convenient if you don't have a ride from a trusted friend or DD," says Shane Lavecchia, who uses the ride service.